Sylvania



l 2 Sheets-Sheet 1. J. WYBAUW. GAS STOVE "(Np ModeL) Patented Nov. Z6, 1889.

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INVEN N. PEYERS. Pnawmnogmpmn waning-wn. l.)4 c.

UNITED STATES PATENT OEEICE.

JOSEPH IVYBAUV, OF BRUSSELBELGIUM, ASSIGNOR TO rIII-IE FUEL GAS AND ELECTRIC ENGINEERING COMPANY, (LIMITED,) OF PITTSBURG, PENN- SYLVANIA.

G A S S T O V E SPECIFICATION forming part of Letters Patent No. 415,891, dated November 26, 1889.

Application iiled March 25, 1889. Serial No. 3047660. (No model.) Patented in Belgium October 5, 1886, Nu. 74,732, and April 8,

1887, No. 77,013; in England April 1, 1887, No. 4,886; in Germany April 2, 1887, No. 42,522; in France April 4, 1887,

No, 182,619, and in Austria-Hungary April G, 1887.

To @ZZ whom it may concern,.- Be it known that I, JOSEPH VYBAUW, a Y subject of the King of the Belgians, residing at Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in Gas-Stoves, (for which I have obtained a patent in Great Britain, No. 4,886, dated April 1, 1887; in Belgium, No. 74,732, dated October 5, 1886, and No. 77,013, dated April 8, 1887; in Austria-I-Iungaiiy, dated April (.3, 1887 in Germany, blo/12,522, dated April 2, 1887, and in France, No. 182,61 9, dated April al, 1887,) of which improvement the following is a specification.

My invention relates to gas heating-stoves of the class or type in which a plate or reiiector is employed to reflect heat generated by gas-flames; and itsmobject is to enable the utilization of the heat generated to be effected as fully as practicable and obtain a powerful heating eifect with a comparatively small consumption of gas.

To this end my invention, generally stated, u consists in certain novel devices and combinations whereby the gas-names, which constitute the source of heat, are supplied with a current of hot air, which is heated by the products of combustion,which pass'off through eduction-passages so arranged as to provide an extended area for the evolution of heat from said products prior to their Aescape into tlie flue or chimney.

The improvements claimed are hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a front view in elevation of a gas-stove embodying niy invention; Fig. 2, a vertical longitudinal section through the same at the line @c of Fig. 4L; Fig. 3, a plan or top view; Fig. 4, a horizontal section at the line y y of Fig. 2; Fig. 5, a transverse section at the line ,e ,e of Fig. 2, Fig. 5, a partial vertical section 'at the line w w of Fig. 5, illustrating the communication of the hot-air channel and a vertical air-supply channel; and Fig. G, a vertical section illustrating the arrangement of stoves in series.

In the practice of my invention I provide and rear and closed at top and sides, the lat- 5o eral portions of the case heilig connected by a top plate 2 and a suitable bar or bars at bottom. A sheet-metal reflector 3, which is bent into a parabolic curve, extends across the case from its top to or near its bottom, the upper end of the reflector being connected to two vertical conduits 15, each fixed to one side ofthe case at its rear, and the lower end being located a shortdistance above the bottom of the case.

A refractory radiating-plate 5, which is prei"- erably composed of a series of sections of lire-brick extending, from one side of the case to the other, is fixed to the lower side of the top plate 2, being supported in front by a lip G,formed on the front of the top plate, and in rear by an angle-iron 7, secured thereto. A burner-pipe 8, provided with a series of oriiices or burner-openings and having a suitable connection, governed by a valve, With a 7o gas-supply pipe, extends across the case below and parallel with the radiating-plate 5, near the front thereof, its relation to the radiatingplate being such thatthe elongated naines of the ignited gas issuing from the burner-open- 7 5 ings impart theirheat to the radiating-plate 5, which collects and radiates the heat upon the reflector 3, instead of permitting it to pass to and through the top plate 2. There being no direct contact of thc flames with the top 8o plate 2, the latter is heated only by the product-s of combustion which pass beneath its rear portion, and its durability is correspondi'ngly increased.

A hot-air channel 9 is formed above that 85 portion of the top plate 2 to which the radiating-plate 5 is secured, by securing a plat-e 10 at a suitable distance above the lat-ter, the plate 10 being bent downwardly in front of the cover-plate and radiating-plate ,and in- 9o wardly below the burner, so that the discharge-opening of the channel 9 may be slightly in rear of the burner-pipe. The channel 9 communicates at its ends with vertical air-supply channels 11, which are open at their lower ends and are secured to the opposite ends of the case 1. In order to provide a sheet-iron case 1, which is open in front an increased area of heating-surface for the current 4of air which passesthrough the hotair channel 9 to the burners, a series of sheetmetal strips 12, having serrated or combits maximum heating effect to be attained.

The products of combustion, after heating the rear portion of the top plate 2 by their contact therewith, pass into and escape through a chimney-pipe 1.3, leading into a suitable eXit-iiue or chimney, the delivery of the products of combustion to the chimney pipe being effected either directly, through a short connecting-pipe 14, leading from the space in rear of the burner-pipe and below the top plate 2, or indirectly, through discharge heating-chann els 15 and supplemental heating-pipes 16, in accordance with the position of a iiap or valve 17, controlling the connecting-pipe 14, as presently to be described. The direct discharge is effectedunt-il the stove becomes sufficiently heated or sufficient draft is produced to permit of the indirect discharge through thevchannels 15 and pipes 16. As soon as the top plate 2 becomes sufficiently heated for this purpose the valve 17 is closed and the passage of the products of combustion through the connectingpipe 14 thereby prevented.

The opening' and closure of the valve 14 are effected automatically bya thermal regulator of any suitable construction, to which` the shaft of the valve is connected and which/ in this instance, is in the form of a movable bar 18, composed of a lower strip of copper and an upper strip of iron, said bar being secured at one end to the top plate 2 and coupled at the other en d by a vertically-adjustable bolt 19 with the shaft of the valve 17. The action of heat upon the bar 1S causes a greater expansion of the copper strip than that of the iron, by which unequal expansion the free end of the bar 18 is raised and the connected valve 17 moved into position to close the pipe 14, a reduction of temperature acting' correspondingly through the bar 1S to open the valve. ln lieu of the double meta-l strip described, a iiat hollow bar filled with liquid might be employed for the same purpose, a bar of such character being adapted to bend when the liquid evaporates and thereby to close the valve. ,c

The maximum heating effect of the stove is developed after the closing of the valve 17, the indirect discharge of the products of combustion which is thereby effected admitting of the evolution of the greater portion of their heat Ain their passage through the discharge heating-channels 1 5 and supplemental heating-pipes 1G. The channels 15 are located on each side of and at the rear of the case 1, and are open at top for the reception of the products of combustion of the gas ignited at the openings of the burner-pipe 8, while their lower ends are connected by the l coiled or serpentine supplemental heating -pipes 16 with the lower end of the chimney-pipe13, the pipes 16 being located in the space below the reliector and serving to increase the area of heating-surface acted on by the products of combustion in their traverse to the chimney-pipe. Each of the channels 15 is centrally divided bya partition 20, which is preferably a plate of copper, and which is cut out and bent over to form divisionplates 21, which abut alternately against the front and rear walls of the channels 15, so as to form a circuitous passage for the products of combust-ion on alternately-opposite sides of the partition 20, the heated products being thereby defiected against the walls of the channels and caused to impart their heat more effectually thereto and to the space surrounding the stove. The heating-surface may, moreover, be materially augmented by connecting to the channels 15 a series of strips of metal 22, having serrated or comb-shaped edges, which are 'fixed to the channels at points where the products of combustion are in close contact with their inner walls. These strips may be connected to the front as well as to the rear and side walls of the channels, or, in other words, wherever there is room to conveniently place them, as indicated in Figs. 2, 4, and 5 The employment of metal strips of this character in gas-stoves enables numerous or long pipes to be dispensed with, as their serrated edges act more effectively than tubular walls as'heating or cooling surfaces.

The plate 10, which forms the top of the hot-air channel 9, is provided with openings governed by gas-escape valves 23, which are arranged to be opened and closed by suitable thermal regulators and serve to obviate explosions and the extinction of the gas-flames, which might otherwise result from a downward draft in the chimney, which sometimes occurs, and which prevents the escape of ,the products of combustion', the same filling the hot-air channel, so that when the gas is again ignited an eXplosion is caused. The valves 3 permit the escape of gas which may collect in the hot-air channel and thereby vprevent not only a possible explosion, but also the extinction of the gas-flames, inasmuch as by the upward escape of' the gas an air-current is induced around the fla-mes and combustion is maintained. l

The'automatic opening and closure of the valves 23, of which there may be any desired number, is effected in the same manner as before described with relation to the valve which governs the discharge to the chimneypipethat is to say, by means of bars 24, composed of two metals of different degrees of expansion and `which carry each one of the IOO IIO

y led.

valves 23 by a vertical pin 28 at one end and are secured at the other end to the top plate 2, so that the valves close when the bars 24 bend downward by the action of the heat andv open when the bars are straightened by a reduction in temperature. In this case an upper copper strip and a lower iron strip are employed.

Fig. 6 illustrates dagrammatically and in transverse section a construction which is particularly designed for use in the central portion of an apartment and in which a series of two or more stoves embodying essential features of that before described are located about a center toward which their rear sides are presented, and are combined with a common exit-pipe, which passes below the floor and into which the supplemental heating-pipes 1G, extending from the discharge heating-channels l5 of the several stoves, are The operation is similar to that of the stove first described, except that no direct discharge into the exit or chimney pipe is provided for, and therefore in this construction it is necessary for one or more gas-jets to be ignited for a short time in order to create the draft required for the normal passage of the gases through the channels l5 and pipes 16 to thel exit-pipe 25.

I claim as my invention and desire to secure by Letters Patent#- l. In a gas-stove, the combination of a reflector, a perforated burner-pipe located in front of the reflector, a top plate located above the burner-pipe, and a radiating-plate of refractory material connected to the inner side of the top plate adjacent to the burner-pipe and extendingin the direction of the reiiector, substantially as set forth.

2f-In a gas-stove, the combination of a reiiector, a perforated burner-pipe located in front of the reflector, a top plate located above the burner-pipe, a radiating-plate of refractory material connected to the inner side of the top plate adjacent to the burner-pipe and extending in the direction of the reiiector, and an air-heating` channel extending across the outer side of the top plate and having a discharge-passage adjacent to the burnerpipe, substantially as set forth.

In a gas-stove, the combination of acase closed by plates at its top and sides, a re- Hector extending across the case, a perforated burner-pipe located in front of the reiiector, a radiating-plate of refractory material connected to the inner side of the top plate of the case, an air-heating channel extending across the outer side of the top plate and having a discharge -passage adjacent to the burner-pipe, and air-supply channels connected to the sides of the case and opening at their upper ends into the air-heating channel, substantially as set forth.

et. In a gas-stove, the combination of a case closed by plates at its top and sides, a reiiector extending across the case, a perforated burner-pipe located in front of the reflector, an air-heating channel extending across the outer side of the top plate of the case and having a discharge-passage adjacent to the burner-pipe, and a series of sheet-metal strips having serrated or comb-shaped edges secured to the top plate within the air-heating channel, substantially as set forth. y

5. In a gas-stove, the combination of a case closed by plates at its topand sides, a reflector extending across the case, a perforated burner-pipe located in front of the reflector, a chimn ey-pipe, a direct-connection pipe leading from the upper portion of the case to the chimney-pipe, a valve governing said directconnection pipe, vertical discharge heatingchannels which are open at their upper ends to the upper portion of the case and which communicate at their lower ends With the chimney-pipe7 and a thermal regulator connected t0 the valve of the direct-connection pipe and controlling the direct and indirect discharge of the products of combustion through said pipe and through the discharge heating-channels, respectively, substantially as set forth.

G. In a gas-stove, the combination ofa case closed by plates at its top and sides, a reiector extending across the case, a perforated burner-pipe located in front of the reiiector, a chimney-pipe, vertical discharge heatingchannels which are open at their upper ends to the upper portion of the case and which communicate at their lower ends with the chimney-pipe7 and partition-plates extending longitudinally through the discharge heatingchannels, said partition-plates being provided with inclined division-plates alternately abutting against opposite walls of the channels, and with intermediate openings, substantially as set forth.

7 In a gas-stove, the combination of a case closed by plates at its top and sides, a relector extending across the case, a perforated burner located in front of the reflector, an airheating channel extending across the outer side of the top plate of the case and having a discharge-passage adjacent to the burnerpipe, a gas-escape valve controlling an opening in the outer wall of the air-heating chanlnel, and a thermal regulator connected to said gas-escape valve, substantially as set forth.

JOSEPH IVYBAUW. Witnesses:

JOSEPH BERTHEUX, Louis VAN Lov.

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